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Finding the Fourth Proportional to 3,908.93, 5,394.30 and 3,591.22

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Solution

The fourth proportional to 3,908.93, 5,394.30 and 3,591.22 is: 4,955.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.93 : 5,394.30 = 3,591.22 : x
  2. Step 2: Convert to fraction form
    3,908.93/5,394.30 = 3,591.22/x
  3. Step 3: Cross multiply
    3,908.93x = 5,394.30 × 3,591.22
  4. Step 4: Simplify right side
    3,908.93x = 19,372,073.12
  5. Step 5: Solve for x
    x = 19,372,073.12/3,908.93
  6. Step 6: Final answer
    x = 4,955.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.